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Finding the Fourth Proportional to 18,388.52, 27,596.64 and 13,470.74

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Solution

The fourth proportional to 18,388.52, 27,596.64 and 13,470.74 is: 20,216.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,388.52 : 27,596.64 = 13,470.74 : x
  2. Step 2: Convert to fraction form
    18,388.52/27,596.64 = 13,470.74/x
  3. Step 3: Cross multiply
    18,388.52x = 27,596.64 × 13,470.74
  4. Step 4: Simplify right side
    18,388.52x = 371,747,162.31
  5. Step 5: Solve for x
    x = 371,747,162.31/18,388.52
  6. Step 6: Final answer
    x = 20,216.26

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.